sonar is a network reconnaissance utility. It runs all its scans from plugins. The currently supported plugins are an ICMP scan (a la the original sonar) and an ACK scan which can see if hosts that don't respond to ICMP are online. With the ability to create your own plugins, sonar is becoming the most extensible security scanner available.
songanizer is a script to organize a directory containing Ogg and MP3 files. The script accepts a list of directories in which the real Ogg and MP3 files reside. It then reads information like author, album, and genre from the files' ID3 tags and creates parallel directory structures which just contain symbolic links to the directories in which the real files live. The goal is to create virtual directory structures which give different views of the data without having redundant copies of the files themselves.
soniK is a digital audio editor for the KDE platform. It allows you to record, edit, and process sounds on your computer. Its main features include recording and playback using your computer's sound card, visualization of the audio as a waveform or a spectrogram, the ability to edit audio and transform it with a wide variety of plugins, and the generation of new sounds.
Sortdir is an LD_PRELOAD library which sorts directory entries before supplying them to your applications. Sorting order is controlled by the current locale settings, however, other directory sorting locales can also be specified. (glibc >= 2.3 is required.) Sortdir can be especially useful as a wrapper for "tar" or "find". It's been used for creating packages for the UHU-Linux distribution; all of its deb packages contain their entries in alphabetical order so that better user feedback is provided when hitting F3 in mc on a package or querying its contents with "dpkg -L".
sortsamples is a utility that solves the problem of having many sample CD/sample library directories with each having kick, hi-hat, snare, etc. folders (leading to sampledirectorychaosmadness). With many sample directories, you ll be slapped around many directories hunting for kicks/hi-hats etc. This utility creates symbolic links to directories which are similar. This way, you can have all your kick. It was made because external Sample organizing utilities can also become a pain, because usually your DAW also has a sample browser in it. It would be nice to have structure at the source: the filesystem. This is a crazy effort to combine similar folders and categorize automatically.
soundgrab provides a cassette deck-like command line interface (ff, rw, jump to position) plus some other commands that let you easily select and save your favorite parts of a big volume of Ogg or raw audio in Ogg, FLAC, raw, cdr, or wav format. If you have a favorite radio show that plays hard-to-find things at a time when your boss insists you should be at work, you can record it, then come home later and save your favorite parts.
The sourcecode XML metadata extraction tools are intended to be used for extracting and transforming XML-like markup embedded in source code comments into syntactically correct external entities or well-formed XML files. This can be used for JavaDoc-like code annotation, providing structured comments, or even embedding metadata used by the build process or configuration management tools.
Spamresponder is a very simple and radical spam filter, combining DNS validation with the challenge/response approach. It will go through all mail messages in /var/mail/$USER, looking for specific "trusted" strings in the header and body parts of the mail. It will delete and send an automatic reply to messages which have no "trusted" strings inside them. Those replies will include one of the "trusted" strings, so the recipient just needs to reply to this confirmation message. The MailFrom-address of an email containing a trusted string becomes a trusted string itself.